* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html,body{
    min-height: 100vh;
}
#layout {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    .loading{
        width: 100%;
        height: 100%;
        position: fixed;
        left: 0;
        top: 0;
        z-index: 9999;
        background-color: #fff;
        text-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
    }

}